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Tech riderRev. 9 Oct 2026

Uptime Cairn

Ch 186.8of 55 Website Monitoring Software
  1. 1Runs onAPI, Linux, self-hosted, Web
  2. 2CostsFree plan
  3. 3Check typeshttp
  4. 4SSL monitoringYes
  5. 5Latency monitoringYes
  6. 6Page health checksYes
  7. 7Status pageYes
  8. 8Maintenance windowsYes
8 lines stated Written from the maker's own pages: uptimecairn.dev
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The Uptime Cairn homepage

Overview

Uptime Cairn is ranked #18 of 55 in website monitoring software on Specifiction. It runs on API, Linux, Self-hosted, Web. There is a free plan.

Uptime Cairn plans and pricing

All plans
Free Free Free, open source, self-hosted; no per-monitor pricing uptimecairn.dev · 9 Oct 2026

Compared on website monitoring software

Free plan
Yesuptimecairn.dev
Check types
httpuptimecairn.dev
SSL monitoring
Yesuptimecairn.dev
Latency monitoring
Yesuptimecairn.dev
Page health checks
Yesuptimecairn.dev
Status page
Yesuptimecairn.dev
Maintenance windows
Yesuptimecairn.dev
API access
Yesuptimecairn.dev

Facts

Purpose
Uptime Cairn monitors websites and servers and tells you when they go down.uptimecairn.dev · 9 Oct 2026
Deployment
It is self-hosted and runs as one Docker container with one data file and no separate database server.uptimecairn.dev · 9 Oct 2026
Checks
It checks HTTP and HTTPS, TCP, ICMP, DNS, TLS and domain expiry, push heartbeats, Docker containers, and gRPC services.uptimecairn.dev · 9 Oct 2026
Alerts
Alert channels include email, webhooks, Slack, Discord, Telegram, Matrix, Gotify, ntfy, Pushover, Microsoft Teams, Mattermost, Google Chat, PagerDuty, Opsgenie, Twilio/SMS, and Apprise.uptimecairn.dev · 9 Oct 2026
Status pages
Public status pages support custom domains and branding, uptime history from 7 to 365 days, and email or webhook subscribers with double opt-in.uptimecairn.dev · 9 Oct 2026
API
The product provides a REST API that can script the actions available in the interface.uptimecairn.dev · 9 Oct 2026
Reports
Scheduled branded reports can be generated as PDF, HTML, CSV, and JSON and delivered by email, Slack, webhook, or an S3 drop.uptimecairn.dev · 9 Oct 2026
Incidents
Incidents can open from failing checks and include an update timeline and acknowledgement.uptimecairn.dev · 9 Oct 2026
Scale
The product site describes 5,000 monitors on one install and 250 checks per second at a 20-second interval.uptimecairn.dev · 9 Oct 2026
Limitations
The site says there is no hosted tier, and multi-region probing, SSO, and synthetic browser flows have not shipped.uptimecairn.dev · 9 Oct 2026
Intended users
The site describes it as a fit for people who self-host, want data on their own infrastructure, or need a write API and branded status pages.uptimecairn.dev · 9 Oct 2026
License
Uptime Cairn is released under Apache 2.0, and the site says no feature is held back for a paid tier.uptimecairn.dev · 9 Oct 2026

Best Uptime Cairn alternatives

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All accessCh 01 Visual Sentinel Free planFree trialAndroid from $4.50/mo7.8 All accessCh 02 Dotcom-Monitor Free planWebWindows from $13.33/mo7.4 All accessCh 03 HostTracker Free planFree trialAPI from $4.08/mo7.4 All accessCh 04 Tallwatch Free planAPILinux from $11.99/mo7.4 All accessCh 05 WebSitePulse Free trialAndroidAPI from $9/mo7.4 All accessCh 06 Cronitor Free planFree trialAPI from $2/mo7.3

Where it ranks on Specifiction

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Sources